Heat exchanger in low-pressure environment
By regularly releasing air pressure in heat exchangers under low air pressure environments and using scrapers to clean dirt, dirt accumulation and corrosion problems are solved, safe and stable heat transfer and equipment integrity detection are achieved, and equipment safety is ensured.
Patent Information
- Application Number
- CN202510534521.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-27
- Publication Date
- 2025-07-11
AI Technical Summary
Traditional heat exchangers are prone to accumulation of dirt under low air pressure environments, resulting in blockage of heat transfer and the tank body is prone to corrosion, posing a potential risk of leakage and explosion.
By releasing air pressure at the gas tank every once in a while, combined with the design of scraper and telescopic rod, we can regularly clean dirt and detect tank integrity, and timely discover potential hidden dangers to prevent leakage and explosion.
It improves heat transfer efficiency, ensures safe and stable operation of the equipment, prevents deformation and corrosion of the tank, and protects personnel and the environment.
Smart Images
Figure CN120292914A_ABST
Abstract
Description
Technical Field
[0001] The present invention relates to the technical field of heat exchangers, and particularly to a heat exchanger under a low-pressure environment. Background Art
[0002] As a device for realizing heat transfer, heat exchangers have been widely used in many fields such as industry, agriculture, construction, and aerospace. With the continuous progress of technology, heat exchanger technology is also constantly developing to adapt to various different working environments and working conditions requirements.
[0003] During the operation of traditional heat exchangers, dirt, scale or other impurities may accumulate on the inner wall of the tank and the outer wall of the cold water delivery pipe. The thermal conductivity of these dirt is usually poor, which will form a thermal resistance and hinder the transfer of heat from hot water to cold water. Moreover, the inner wall of the tank and the outer wall of the cold water delivery pipe are in contact with water and other media for a long time, and corrosion is likely to occur. Summary of the Invention
[0004] In the present invention, the air pressure in the gas storage tank is released at regular intervals to clean the inside of the tank, so that the dirt in the water is removed regularly, enabling heat to be transferred more smoothly. At the same time, when the scraper moves, it will drive the telescopic rod to move. While cleaning the inside of the tank, the integrity of the tank is detected. Furthermore, by detecting the integrity of the tank, potential hidden dangers can be discovered in time to avoid dangerous situations such as leakage and explosion, ensuring the safe and stable operation of the equipment.
[0005] To achieve the above object, the present invention provides the following technical solution: A heat exchanger under a low-pressure environment, including a tank body. One end of the tank body is provided with a water inlet tank, the upper end of the water inlet tank is connected with a water inlet pipe, one side of the water inlet pipe is provided with a sealing groove, the outside of the sealing groove is connected with a guiding pipe, a reciprocating lead screw A rotates inside the guiding pipe, the outside of the tank body is connected with a pressure relief pipe, a reciprocating lead screw B rotates inside the pressure relief pipe, a check valve is connected to the outside of the pressure relief pipe, a hot water inlet is provided on one side of the pressure relief pipe, a gear is provided on one side of the hot water inlet, one end of the guiding pipe is connected with a connecting pipe, one end of the connecting pipe is connected with a gas storage tank, a hose is connected to one side of the gas storage tank, a branch pipe is connected to the outside of the hose, one end of the branch pipe is connected with a pressure pipe, a rack is provided at one end of the pressure pipe, a cylinder is provided on one side of the water inlet tank, a diversion pipe is arranged inside the tank body, and a scraper is arranged outside the diversion pipe.
[0006] Preferably, one end of the tank body is fixedly connected to the water inlet tank, the lower end of the water inlet tank is fixedly connected to a water outlet tank, and both ends of the diversion pipe penetrate through the tank body and extend into the water inlet tank and the water outlet tank.
[0007] Preferably, the sealing groove penetrates through the water inlet pipe and extends to the inside, a paddle is movably connected inside the sealing groove, the reciprocating lead screw A penetrates through the sealing groove and extends to the inside and is fixedly connected to the axis of the paddle, a piston A is arranged inside the guide pipe, the piston A is connected to the reciprocating lead screw A by a ball screw pair, and the guide pipe is fixedly connected to the sealing groove.
[0008] Preferably, the other end of the axis of the paddle is fixedly connected to a reciprocating lead screw B, a piston B is arranged inside the pressure relief pipe, the piston B is connected to the reciprocating lead screw B by a ball screw pair, the pressure relief pipe penetrates through the tank body and extends to the inside, and the one-way valve is fixedly connected to the outside of the pressure relief pipe and penetrates through the pressure relief pipe and extends to the inside.
[0009] Preferably, the guide pipe is connected to the gas storage tank through a connecting pipe, a pressure valve is arranged at the connection between the gas storage tank and the hose, one end of the hose is fixedly connected to four cylinders, and a push rod is movably connected inside each of the four cylinders.
[0010] Preferably, the push rod penetrates through the water inlet tank and the tank body and extends to the inside of the tank body, one end of the push rod located outside is movably connected to a movable buckle, and one end of the movable buckle is fixedly connected to a sphere.
[0011] Preferably, one end of the scraper is fixedly connected to a plurality of connecting grooves, empty grooves are formed on the outside of the connecting grooves, and the movable buckle is movably connected to the connecting grooves through the sphere.
[0012] Preferably, the outer diameter of the scraper matches the inner diameter of the tank body, a plurality of through holes are formed inside the scraper, the scraper is connected to the outside of the diversion pipe through the plurality of through holes, the size of the through holes matches the outer diameter of the diversion pipe, and a plurality of hole grooves are formed inside the scraper, and a plurality of telescopic rods are connected to the outside of the scraper.
[0013] Preferably, a pressure valve is arranged at the connection between the branch pipe and the hose, a push rod is movably connected inside the air pressure pipe, a rack is fixedly connected to one end of the push rod located outside, the rack is located below the gear, and the rack meshes with the gear.
[0014] Preferably, the hot water inlet is fixedly connected to the upper end of the tank body, the tank body is fixedly connected to a hot water outlet on the opposite side of the hot water inlet, a connecting rod is fixedly connected to one end of the gear close to the hot water inlet, and the connecting rod penetrates through the hot water inlet and extends to the inside and is connected to a valve.
[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. While the paddle drives the reciprocating screw A to rotate, the other end will simultaneously drive the reciprocating screw B to rotate synchronously. When the reciprocating screw B rotates, it will drive the piston B to reciprocate inside the pressure relief pipe. Since the pressure relief pipe is connected to the inside of the tank, when the piston B reciprocates, the air pressure inside the tank will be pumped outwards. The air pressure pumped out is discharged outwards through the one-way valve, and the discharge amount of the one-way valve can be adjusted. Thus, the exhaust amount of the one-way valve can be adjusted according to the amount of hot water entering the tank, so that the pressure difference between the inside and outside of the tank forms a certain direct proportion, preventing the pressure inside the tank from being too high, which may cause a large pressure on the tank and may lead to deformation or even rupture of the tank. At the same time, pumping out a certain proportion of the air pressure can make the pressure inside the tank adapt to the external low-pressure environment, maintain the water in a liquid state at normal temperature, prevent the water from boiling prematurely, ensure the stable progress of the heat exchange process in the heat exchanger, and improve the heat exchange efficiency.
[0016] 2. The present invention releases air pressure from the gas storage tank at regular intervals to clean the inside of the tank, so that it can be regularly cleaned to remove dirt in the water, making the heat transfer more smooth. At the same time, when the scraper moves, it will drive the telescopic rod to move. If the tank is sunken, the scraper will be stuck at the sunken place and thus cannot continue to move. When the tank expands outwards, when the scraper moves to the expanded place, the telescopic rod will pop outwards. When the telescopic rod pops out, it will hold the scraper in place, so that while cleaning the inside of the tank, the integrity of the tank can be detected. Furthermore, by detecting the integrity of the tank, potential hidden dangers can be discovered in time, avoiding dangerous situations such as leakage and explosion, ensuring the safe and stable operation of the equipment, and protecting the safety of personnel and the surrounding environment.
[0017] 3. When the gear rotates, the valve inside the hot water inlet will be closed, so that the hot water inlet valve can be automatically closed to cut off the hot water supply in time, avoid the situation from deteriorating, protect the safety of the equipment and the surrounding personnel, and at the same time reducing the entry of hot water can prevent further damage to the internal structure and components due to excessive deformation of the tank, and avoid the heat exchange pipes, brackets, etc. of the heat exchanger from being distorted and broken due to the deformation of the tank. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 One of the overall structure diagrams of the present invention; Figure 2 Another overall structure diagram of the present invention; Figure 3 One of the partial structure diagrams of the present invention; Figure 4 Another partial structure diagram of the present invention; Figure 5 Internal sectional view of the tank of the present invention; Figure 6 Partial structure sectional view of the present invention; Figure 7 Enlarged view of the structure at A of the present invention; Figure 8 It is an enlarged view of the structure at B of the present invention.
[0019] In the figure: 1. tank body; 2. water inlet groove; 3. water inlet pipe; 4. sealing groove; 5. paddle; 6. reciprocating screw A; 7. piston A; 8. guide tube; 9. reciprocating screw B; 10. piston B; 11. pressure relief pipe; 12. one-way valve; 13. hot water inlet; 14. gear; 15. connecting rod; 16. connecting pipe; 17. gas storage tank; 18. hose; 19. cylinder; 20. push rod; 21. movable buckle; 22. branch pipe; 23. air pressure pipe; 24. push rod; 25. rack; 26. guide pipe; 27. scraper; 28. telescopic rod. DETAILED DESCRIPTION
[0020] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.
[0021] The present invention provides a heat exchanger for a low-pressure environment, comprising a tank body 1, a water inlet groove 2 is arranged at one end of the tank body 1, a water inlet pipe 3 is connected to the upper end of the water inlet groove 2, a sealing groove 4 is arranged at one side of the water inlet pipe 3, a guide pipe 8 is connected to the outer side of the sealing groove 4, a reciprocating screw A6 rotates inside the guide pipe 8, a pressure relief pipe 11 is connected to the outer side of the tank body 1, a reciprocating screw B9 rotates inside the pressure relief pipe 11, a one-way valve 12 is connected to the outer side of the pressure relief pipe 11, and a hot water heater is arranged on one side of the pressure relief pipe 11. Inlet 13, a gear 14 is provided on one side of the hot water inlet 13, one end of the guide pipe 8 is connected to a connecting pipe 16, one end of the connecting pipe 16 is connected to a gas storage tank 17, one side of the gas storage tank 17 is connected to a hose 18, the outside of the hose 18 is connected to a branch pipe 22, one end of the branch pipe 22 is connected to an air pressure pipe 23, one end of the air pressure pipe 23 is provided with a rack 25, one side of the water inlet trough 2 is provided with a cylinder 19, a guide pipe 26 is provided inside the tank body 1, and a scraper 27 is provided on the outside of the guide pipe 26.
[0022] In an optional embodiment, one end of the tank body 1 is fixedly connected to the water inlet trough 2, and the lower end of the water inlet trough 2 is fixedly connected to the water outlet trough. Both ends of the guide pipe 26 pass through the tank body 1 and extend to the inside of the water inlet trough 2 and the water outlet trough. When in use, cold water is transported to the inside of the water inlet trough 2. After the cold water enters the inside of the water inlet trough 2, it will enter the inside of the guide pipe 26. The guide pipe 26 will transport the cold water to the water outlet trough and then discharge it.
[0023] In an alternative embodiment, the sealing groove 4 penetrates through the water inlet pipe 3 and extends to the inside. A paddle 5 is movably connected inside the sealing groove 4. A reciprocating lead screw A6 penetrates through the sealing groove 4 and extends to the inside and is fixedly connected to the axis of the paddle 5. A piston A7 is arranged inside the guide pipe 8. The piston A7 is connected to the reciprocating lead screw A6 by a ball screw pair. The guide pipe 8 is fixedly connected to the sealing groove 4. When cold water enters the inside of the water inlet tank 2 through the water inlet pipe 3, the water flow will drive the paddle 5 to rotate. When the paddle 5 rotates, it will synchronously drive the reciprocating lead screw A6 to rotate. When the reciprocating lead screw A6 rotates, it will drive the outer piston A7 to reciprocate, so that when the piston A7 reciprocates, it will continuously inflate the rear end of the guide pipe 8.
[0024] In an alternative embodiment, the other end of the axis of the paddle 5 is fixedly connected to a reciprocating lead screw B9. A piston B10 is arranged inside the pressure relief pipe 11. The piston B10 is connected to the reciprocating lead screw B9 by a ball screw pair. The pressure relief pipe 11 penetrates through the tank body 1 and extends to the inside. A one-way valve 12 is fixedly connected to the outside of the pressure relief pipe 11, and the one-way valve 12 penetrates through the pressure relief pipe 11 and extends to the inside. While the paddle 5 drives the reciprocating lead screw A6 to rotate, the other end will synchronously drive the reciprocating lead screw B9 to rotate synchronously. When the reciprocating lead screw B9 rotates, it will drive the piston B10 to reciprocate inside the pressure relief pipe 11. Since the pressure relief pipe 11 is connected to the inside of the tank body 1, when the piston B10 reciprocates, it will pump out the air pressure inside the tank body 1, and the pumped air pressure is discharged outward through the one-way valve 12. The discharge amount of the one-way valve 12 can be adjusted, so that the air exhaust amount of the one-way valve 12 can be adjusted according to the amount of hot water entering the inside of the tank body 1, so that the pressure difference between the inside and outside of the tank body 1 forms a certain direct proportion, preventing the pressure inside the tank body 1 from being too high, which may cause a large pressure on the tank body 1 and may cause the tank body 1 to deform or even rupture. At the same time, pumping out a certain proportion of the air pressure can make the pressure inside the tank adapt to the external low-pressure environment, maintain the water in a liquid state at normal temperature, prevent the water from boiling prematurely, ensure the stable progress of the heat exchange process inside the heat exchanger, and improve the heat exchange efficiency.
[0025] In an alternative embodiment, the guide pipe 8 is connected to the gas storage tank 17 through a connecting pipe 16. A pressure valve is arranged at the connection between the gas storage tank 17 and the hose 18. One end of the hose 18 is fixedly connected to four groups of cylinders 19. A push rod 20 is movably connected inside each of the four groups of cylinders 19. As described above, when the piston A7 inflates the rear end of the guide pipe 8, it will deliver the air pressure into the inside of the connecting pipe 16, and the connecting pipe 16 will deliver the air pressure into the inside of the gas storage tank 17. After the air pressure inside the gas storage tank 17 is stored to a certain pressure value, the pressure valve at the connection with the hose 18 is opened, so that the air pressure will quickly enter the inside of the hose 18, and the hose 18 will deliver the air pressure into the inside of the cylinders 19.
[0026] In an alternative embodiment, the push rod 20 passes through the water inlet tank 2 and extends into the interior of the tank body 1. One end of the push rod 20 located on the outside is movably connected with a movable buckle 21, and a sphere is fixedly connected to one end of the movable buckle 21. As described above, after air pressure enters the interior of the cylinder 19, the cylinder 19 will push the push rod 20 inside it outwards.
[0027] In an alternative embodiment, multiple connecting grooves are fixedly connected to one end of the scraper 27, and empty grooves are formed on the outside of the connecting grooves. The movable buckle 21 is movably connected to the connecting grooves through the sphere. When the push rod 20 is pushed outwards, it will synchronously push the scraper 27 to move towards one end through the movable buckle 21. When the scraper 27 moves, it will clean the inner wall of the tank body 1 and the outer wall of the diversion pipe 26. Thus, the air pressure is released from the air storage tank 17 at regular intervals to clean the interior of the tank body 1, so that the dirt in the water can be removed regularly, enabling the heat to be transferred more smoothly, improving the heat transfer efficiency of the heat exchanger, ensuring its good working performance. At the same time, cleaning the inner and outer walls can promptly detect and handle the corrosion problems that have occurred, and at the same time reduce the corrosion effect of dirt on the metal, extending the service life of the equipment.
[0028] In an alternative embodiment, the outer diameter of the scraper 27 matches the inner diameter of the tank body 1. Multiple through holes are formed inside the scraper 27. The scraper 27 is connected to the outside of the diversion pipe 26 through the multiple through holes. The size of the through holes matches the outer diameter of the diversion pipe 26, and multiple hole grooves are formed inside the scraper 27. Multiple telescopic rods 28 are connected to the outside of the scraper 27. When the scraper 27 moves to the corner of the diversion pipe 26, with the continuous push of the push rod 20, the scraper 27 will be slightly flipped by a certain distance through the movable buckle 21, so as to clean the corner of the diversion pipe 26 and ensure the integrity of the cleaning. At the same time, when the scraper 27 moves, it will drive the telescopic rods 28 to move. If the tank body 1 is sunken, the scraper 27 will be stuck at the sunken place and thus unable to continue moving. When the tank body 1 expands outwards, when the scraper 27 moves to the expanded place, the telescopic rods 28 will pop outwards. When the telescopic rods 28 pop out, they will hold the scraper 27 in place, so as to detect the integrity of the tank body 1 while cleaning the interior of the tank body 1. Furthermore, by detecting the integrity of the tank body 1, potential hidden dangers can be promptly discovered, avoiding dangerous situations such as leakage and explosion, and ensuring the safe and stable operation of the equipment and protecting the safety of personnel and the surrounding environment.
[0029] In an alternative embodiment, a pneumatic valve is provided at the connection between the branch pipe 22 and the hose 18. A push rod 24 is movably connected inside the pneumatic pipe 23. One end of the push rod 24 located outside is fixedly connected to a rack 25. The rack 25 is located below the gear 14 and meshes with the gear 14. When the tank body 1 is deformed internally and the scraper 27 cannot move, as the push rod 20 cannot move and the pressure inside the hose 18 increases, the pneumatic valve at the connection between the branch pipe 22 and the hose 18 will open. Thus, the air pressure will enter the inside of the pneumatic pipe 23 through the branch pipe 22. After the air pressure enters the inside of the pneumatic pipe 23, it will push the push rod 24 outwards. When the push rod 24 is pushed outwards, it will simultaneously push the rack 25 to move. When the rack 25 moves, it will drive the gear 14 to rotate.
[0030] In an alternative embodiment, the hot water inlet 13 is fixedly connected to the upper end of the tank body 1. The tank body 1 is fixedly connected with a hot water outlet on the opposite side of the hot water inlet 13. One end of the gear 14 close to the hot water inlet 13 is fixedly connected to a connecting rod 15. The connecting rod 15 passes through the hot water inlet 13 and extends to the inside to be connected to the valve. When the gear 14 rotates, it will close the valve inside the hot water inlet 13, thus automatically closing the valve of the hot water inlet 13 to cut off the hot water supply in time, avoid the situation from deteriorating, protect the safety of the equipment and the surrounding personnel, and at the same time reduce the entry of hot water to prevent further damage to the internal structure and components due to excessive deformation of the tank body 1, and avoid the heat exchange tubes, brackets, etc. of the heat exchanger from being distorted and broken due to the deformation of the tank body.
[0031] Working principle: Cold water enters the inside of the water inlet tank 2 through the water inlet pipe 3. After the cold water enters the inside of the water inlet tank 2, it will enter the inside of the diversion pipe 26. The diversion pipe 26 will transport the cold water to the water outlet tank and then discharge it. When the cold water enters the inside of the water inlet tank 2 through the water inlet pipe 3, the water flow will drive the paddle 5 to rotate. When the paddle 5 rotates, it will simultaneously drive the reciprocating lead screw A6 to rotate. When the reciprocating lead screw A6 rotates, it will drive the piston A7 outside to reciprocate. Thus, when the piston A7 reciprocates, it will continuously inflate the rear end of the guide pipe 8. When the piston A7 inflates the rear end of the guide pipe 8, it will transport the air pressure into the inside of the connecting pipe 16. The connecting pipe 16 will transport the air pressure into the inside of the air storage tank 17. After the air pressure inside the air storage tank 17 is stored to a certain pressure value, the pneumatic valve at the connection with the hose 18 is opened. Thus, the air pressure will quickly enter the inside of the hose 18. The hose 18 will transport the air pressure into the inside of the cylinder 19. After the air pressure enters the inside of the cylinder 19, the cylinder 19 will push the push rod 20 inside outwards. When the push rod 20 is pushed outwards, it will simultaneously push the scraper 27 to move towards one end through the movable buckle 21. When the scraper 27 moves, it will clean the inner wall of the tank body 1 and the outer wall of the diversion pipe 26. Thus, the inside of the tank body 1 is cleaned by the air storage tank 17 releasing air pressure at regular intervals, so that it is regularly cleaned to remove the dirt in the water. When the scraper 27 moves to the corner of the diversion pipe 26, with the continuous pushing of the push rod 20, the scraper 27 will be slightly flipped a certain distance through the movable buckle 21, so as to clean the corner of the diversion pipe 26 and ensure the integrity of the cleaning. At the same time, when the scraper 27 moves, it will drive the telescopic rod 28 to move. If the tank body 1 is sunken, the scraper 27 will be stuck at the sunken part and thus unable to move further. When the tank body 1 expands outwards, when the scraper 27 moves to the expanded part, the telescopic rod 28 will pop outwards. When the telescopic rod 28 pops out, the scraper 27 will be stuck in place, so as to detect the integrity of the tank body 1 while cleaning the inside of the tank body 1, and further detect the integrity of the tank body 1; When the deformation inside the tank body 1 causes the scraper 27 to be unable to move, as the push rod 20 is unable to move and the pressure inside the hose 18 increases, the air pressure valve at the connection between the branch pipe 22 and the hose 18 will open, so that the air pressure will enter the inside of the air pressure pipe 23 through the branch pipe 22. After the air pressure enters the inside of the air pressure pipe 23, it will push the ejector rod 24 outwards. When the ejector rod 24 is pushed outwards, it will synchronously push the rack 25 to move. When the rack 25 moves, it will drive the gear 14 to rotate. When the gear 14 rotates, it will close the valve inside the hot water inlet 13, so as to cut off the hot water supply in time; While the paddle 5 drives the reciprocating lead screw A6 to rotate, the other end will synchronously drive the reciprocating lead screw B9 to rotate at the same time. When the reciprocating lead screw B9 rotates, it will drive the piston B10 to reciprocate inside the pressure relief pipe 11. Since the pressure relief pipe 11 is connected to the inside of the tank body 1, when the piston B10 reciprocates, the air pressure inside the tank body 1 will be pumped outwards, and the pumped air pressure is discharged outwards through the one-way valve 12. The discharge amount of the one-way valve 12 can be adjusted, so that the exhaust amount of the one-way valve 12 can be adjusted according to the amount of hot water entering the tank body 1, so that the pressure difference between the inside and outside of the tank body 1 forms a certain direct ratio.
[0032] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A heat exchanger under a low-pressure environment, comprising a tank body (1), characterized in that, One end of the tank body (1) is provided with a water inlet tank (2). The upper end of the water inlet tank (2) is connected with a water inlet pipe (3). One side of the water inlet pipe (3) is provided with a sealing groove (4). The outer side of the sealing groove (4) is connected with a guide pipe (8). A reciprocating lead screw A (6) rotates inside the guide pipe (8). The outer side of the tank body (1) is connected with a pressure relief pipe (11). A reciprocating lead screw B (9) rotates inside the pressure relief pipe (11). The outer side of the pressure relief pipe (11) is connected with a check valve (12). One side of the pressure relief pipe (11) is provided with a hot water inlet (13). One side of the hot water inlet (13) is provided with a gear (14). One end of the guide pipe (8) is connected with a connecting pipe (16). One end of the connecting pipe (16) is connected with a gas storage tank (17). One side of the gas storage tank (17) is connected with a hose (18). The outer side of the hose (18) is connected with a branch pipe (22). One end of the branch pipe (22) is connected with a pneumatic pipe (23). One end of the pneumatic pipe (23) is provided with a rack (25). One side of the water inlet tank (2) is provided with a cylinder (19). A diversion pipe (26) is arranged inside the tank body (1). A scraper (27) is arranged on the outer side of the diversion pipe (26).
2. The heat exchanger under a low-pressure environment according to claim 1, wherein One end of the tank body (1) is fixedly connected with the water inlet tank (2). The lower end of the water inlet tank (2) is fixedly connected with a water outlet tank. Both ends of the diversion pipe (26) penetrate through the tank body (1) and extend into the water inlet tank (2) and the water outlet tank.
3. The heat exchanger under a low-pressure environment according to claim 1, wherein The sealing groove (4) penetrates through the water inlet pipe (3) and extends to the inside. A paddle (5) is movably connected inside the sealing groove (4). The reciprocating lead screw A (6) penetrates through the sealing groove (4) and extends to the inside and is fixedly connected to the axis of the paddle (5). A piston A (7) is arranged inside the guide pipe (8). The piston A (7) is connected with the reciprocating lead screw A (6) by a ball screw pair. The guide pipe (8) is fixedly connected with the sealing groove (4).
4. The heat exchanger under a low-pressure environment according to claim 3, characterized in that, The other end of the axis of the paddle (5) is fixedly connected with a reciprocating lead screw B (9). A piston B (10) is arranged inside the pressure relief pipe (11). The piston B (10) is connected with the reciprocating lead screw B (9) by a ball screw pair. The pressure relief pipe (11) penetrates through the tank body (1) and extends to the inside. The check valve (12) is fixedly connected to the outer side of the pressure relief pipe (11), and the check valve (12) penetrates through the pressure relief pipe (11) and extends to the inside.
5. A heat exchanger in a low-pressure environment according to claim 1, characterized in that, The guide pipe (8) is connected with the gas storage tank (17) through the connecting pipe (16). A pneumatic valve is arranged at the connection between the gas storage tank (17) and the hose (18). One end of the hose (18) is fixedly connected with four cylinders (19). Push rods (20) are movably connected inside the four cylinders (19).
6. The heat exchanger under a low-pressure environment according to claim 5, wherein The push rod (20) penetrates through the water inlet tank (2) and the tank body (1) and extends into the tank body (1). One end of the push rod (20) located on the outer side is movably connected with a movable buckle (21). One end of the movable buckle (21) is fixedly connected with a sphere.
7. The heat exchanger under a low-pressure environment according to claim 6, wherein One end of the scraper (27) is fixedly connected with a plurality of connecting grooves. An empty groove is arranged on the outer side of the connecting groove. The movable buckle (21) is movably connected with the connecting groove through the sphere.
8. The heat exchanger under a low-pressure environment according to claim 1, characterized in that The outer diameter of the scraping plate (27) matches the inner diameter of the tank body (1). A plurality of through holes are formed inside the scraping plate (27). The scraping plate (27) is connected to the outer side of the diversion pipe (26) through the plurality of through holes. The size of the through holes matches the outer diameter of the diversion pipe (26). A plurality of hole grooves are formed inside the scraping plate (27). A plurality of telescopic rods (28) are connected to the outer side of the scraping plate (27).
9. The heat exchanger under a low-pressure environment according to claim 1, characterized in that, A pneumatic valve is provided at the connection between the branch pipe (22) and the hose (18). A push rod (24) is movably connected inside the pneumatic pipe (23). One end of the push rod (24) located on the outer side is fixedly connected to a rack (25). The rack (25) is located below the gear (14), and the rack (25) meshes with the gear (14).
10. The heat exchanger under a low-pressure environment according to claim 1, wherein, The hot water inlet (13) is fixedly connected to the upper end of the tank body (1). A hot water outlet is fixedly connected to the opposite side of the tank body (1) from the hot water inlet (13). One end of the gear (14) close to the hot water inlet (13) is fixedly connected to a connecting rod (15). The connecting rod (15) passes through the hot water inlet (13) and extends to the inside to be connected to a valve.